Class: Lita::Handlers::OnewheelAmazonProduct

Inherits:
Handler
  • Object
show all
Defined in:
lib/lita/handlers/onewheel_amazon_product.rb

Instance Method Summary collapse

Instance Method Details

#get_amazon_product(response) ⇒ Object 



9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
 
# File 'lib/lita/handlers/onewheel_amazon_product.rb', line 9

def get_amazon_product(response)
  description = ''
  uri = response.matches[0][0]
  Lita.logger.debug "lita-onewheel-amazon-product: Grabbing URI #{uri}"

  noko_doc = nil
  counter = 0
  loop do
    doc = RestClient.get uri

    noko_doc = Nokogiri::HTML doc
    noko_doc.css('meta').each do |meta|
      attrs = meta.attributes
      if attrs['name'].to_s == 'title'
        description = process_description attrs['content'].to_s
      end
    end

    counter += 1
    break if counter == 3 or description
  end

  if description.empty?
    Lita.logger.error "lita-onewheel-amazon-product: Processing of #{uri} failed."
    return
  end

  price = get_price(noko_doc)

  unless description.empty?
    response.reply price.to_s + ' ' + description.to_s
  end
end

#get_price(noko_doc) ⇒ Object

Getting prices is very non-intuitive, every type of price has it’s own structure. Here we keep trying until we get something.



45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
 
# File 'lib/lita/handlers/onewheel_amazon_product.rb', line 45

def get_price(noko_doc)
  price_node = noko_doc.css('span#priceblock_ourprice')
  price = nil

  # Typical product price
  if price_node.empty?
    price_node = noko_doc.css('div#unqualifiedBuyBox .a-color-price')
  end

  # Third-party seller only price
  if price_node.empty?
    price_node = noko_doc.css('div#buyNewSection span.a-color-price')
  end

  # Kindle book price
  if price_node.empty?
    price_node = noko_doc.css('td.dp-price-col span.a-color-price')
  end

  if price_node.empty?
    price_node = noko_doc.css('div#olp_feature_div span.a-color-price')
  end

  unless price_node.empty?
    price = price_node.first.content.to_s
  end

  price
end

#process_description(desc) ⇒ Object 



75
76
77
78
 
# File 'lib/lita/handlers/onewheel_amazon_product.rb', line 75

def process_description(desc)
  desc.sub! /^Amazon.com\s*: /, ''
  desc.sub! /:.*$/, ''
end